<div class="col-md-9">
    <div class="panel panel-default">
        <div class="panel-heading">
            <h3 class="panel-title">{{ panel_title }}</h3>
        </div>
        <div class="panel-body">
            {% block panel_body %}
                未完成
            {% endblock %}
        </div>
    </div>
</div>